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The angle between the vectors (hati+hatj...

The angle between the vectors `(hati+hatj)` and `(hatj+hatk)` is

A

`90^(@)`

B

`180^(@)`

C

`0^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
4
`cos theta = (vecA*vecB)/(AB) = ((hati+ hatj)*(hatj+hatk))/(sqrt2sqrt2)= (1)/(2) rArr theta = 60^(@)`
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ALLEN -BASIC MATHEMATICS USED IN PHYSICS &VECTORS -DOT PRODUCT
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